Flight crew reported pitch trim system failure on final; requiring a go around.

Attributes
ACN	1739631
Time
Date	202004
Local Time Of Day	0001-0600
Place
Locale Reference	MSP.Airport
State Reference	MN
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	ATR 42
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Elevator Trim System
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

While on 7-mile final for runway 30L at msp at 3000MSL/160 KIAS; the pitch trim asym local alert and ccas flight control caution lights illuminated. The crew discontinued the approach and coordinated with ATC for extended vectors to run the appropriate checklists. Crew referenced qrc and QRH and accomplished pitch trim asym and pitch trim inoperative QRH checklists. Attempted one reset of popped position ind circuit breaker unsuccessfully. Crew [requested priority] with ATC and flew an uneventful approach in accordance with (in accordance with) QRH guidance.following debrief with chief pilot; it was relayed that the suggested course of action would have been to not attempt a reset of the trim indicator (position ind) circuit breaker.recommend emphasis in initial/recurrent training addressing circuit breaker guidance with respect to trim malfunctions.

Original NASA ASRS Text

Title: Flight Crew reported pitch trim system failure on final; requiring a go around.

Narrative: While on 7-mile final for Runway 30L at MSP at 3000MSL/160 KIAS; the PITCH TRIM ASYM local alert and CCAS FLT CTL caution lights illuminated. The crew discontinued the approach and coordinated with ATC for extended vectors to run the appropriate checklists. Crew referenced QRC and QRH and accomplished PITCH TRIM ASYM and PITCH TRIM INOPERATIVE QRH checklists. Attempted one reset of popped POS IND circuit breaker unsuccessfully. Crew [requested priority] with ATC and flew an uneventful approach IAW (in accordance with) QRH guidance.Following debrief with Chief Pilot; it was relayed that the suggested course of action would have been to not attempt a reset of the trim indicator (POS IND) circuit breaker.Recommend emphasis in initial/recurrent training addressing circuit breaker guidance with respect to trim malfunctions.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.